05 06 e320cdi or new v6 bluetec? - PeachParts Mercedes-Benz Forum

TMAllison · #1 09-29-2007, 11:38 PM

Quote:

Originally Posted by H-townbenzoboy

Ok, just from what I've heard someone tell me, get the one with the inline 6, supposedly the V6 has some bugs in it.

I think those bugs are called UREA, they eat the exhaust and make the system

cleaner.

dwayneb · #2 09-30-2007, 01:12 AM

My wife has an 05 CDI. AWESOME car!!! The inline 6 has been sold in Europe for years and should have all the "bugs" out of it. I can't imagine any advantage that the V-6 would have. We routinely get 32 mpg and on long trips get 35. The acceleration is incredible. What I don't understand is why anyone would buy a 320 gasser.

Also, you can get a much better price on an 05.

nhdoc · #3 09-30-2007, 09:06 AM

Quote:

Originally Posted by TMAllison

I think those bugs are called UREA, they eat the exhaust and make the system

cleaner.

This isn't true, the bluetec E320 does not use the urea injection system (not yet anyway). I've confirmed this with my dealer as I was looking at an '07 and wanted to know what extra maintenance was involved with the bluetec engine...none over the I6 is the short answer.

TMAllison · #4 09-30-2007, 01:46 PM

My mistake then. I was under the impression thats what the "Blutec" was all about. Cleanliness.

nhdoc · #5 09-30-2007, 03:48 PM

Quote:

Originally Posted by TMAllison

My mistake then. I was under the impression thats what the "Blutec" was all about. Cleanliness.

It does have a more advanced emissions system than the CDI. Just not the urea injection system that uses a consumable that needs to be replenished - that system is not presently used in the USA.

The bluetec system as it currently stands meets all of the emissions requirements the EPA has established without the need for that additional system. According to the dealer I visited that may be coming in future years but for now the bluetec does not have that system.

dukegrad98 · #6 09-30-2007, 05:56 PM

Quote:

Originally Posted by nhdoc

The bluetec system as it currently stands meets all of the emissions requirements the EPA has established without the need for that additional system.

Yep, but it's still only 45-state legal. Some of you will have to buy one used, or new in another state and put a bunch of miles on it before you can take it home. Asinine.

The federal government needs to occupy the field of regulation on this legal issue, and stop letting rogue states like CA, RI, ME, NY, etc., foul it all up for manufacturers and consumers with their higher standards.

Cheers, John

Hatterasguy · #7 09-30-2007, 08:11 PM

Considering what they are asking for 2005 CDI's I'd just buy a new one. Why pay $35k-$40k for an almost 3 maybe 4 year old car, with lots of miles on it when you can get a brand new one for $10k-$15k more?

You can get E320's of similer vintage for a lot less, the diesel reall adds to the price. IMHO its not worth paying a large premium for the diesel.

#8 09-30-2007, 03:58 PM

Quote:

Originally Posted by TMAllison

I was under the impression thats what the "Blutec" was all about. Cleanliness.

As well as choking the engine's exhaust, additional fuel consumption and a substantial addition to the "diesel premium".

dukegrad98 · #9 09-30-2007, 02:28 PM

Quote:

Originally Posted by nhdoc

This isn't true, the bluetec E320 does not use the urea injection system (not yet anyway).

Huh... That's a real head-scratcher. I guess all of us are seriously misinformed -- it's all just vaporware (no pun intended) for now?

Seems you are right, though. I'm cut/pasting below from the mbusa.com website FAQ section... (Emphasis is mine.)

*****

To meet even more stringent emissions requirements, the BLUETEC system *could* be equipped with another module — AdBlue injection, replacing the DeNOx storage catalytic converter. A water-based urea solution, AdBlue is carried in its own tank and metered into the exhaust in minute quantities — quantities so small that the tank only needs to be refilled during routinely scheduled maintenance. When AdBlue is injected into pre-cleaned exhaust gas, ammonia (NH3) is released, converting nitrogen oxides into harmless nitrogen (and water) in the downstream SCR catalytic converter. Called SCR for selective catalytic reduction, this process creates the most effective method of diesel exhaust gas after-treatment currently available. In Europe, AdBlue injection has already proven effective in more than 15,000 Mercedes-Benz commercial vehicles.

*****

Cheers, John